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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 26 — Dec. 25, 2006
  • pp: 13014–13020

Etendue-preserving mixing and projection optics for high-luminance LEDs, applied to automotive headlamps

Aleksandra Cvetkovic, Oliver Dross, Julio Chaves, Pablo Benítez, Juan C. Miñano, and Rubén Mohedano  »View Author Affiliations

Optics Express, Vol. 14, Issue 26, pp. 13014-13020 (2006)

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By having a single optical element combine the light of several high luminance LEDs, a high luminance light source can be formed, with shape and emission characteristics adaptable to nearly all illumination problems. The illuminance distribution of this virtual source facilitates the generation of the desired intensity pattern via its imaging-stye projection into the far field. This projection is achieved by one refractive and one reflective freeform surface, both calculated simultaneously by the 3D SMS method, which is herein demonstrated for an LED automotive headlamp.

© 2006 Optical Society of America

OCIS Codes
(220.2740) Optical design and fabrication : Geometric optical design
(220.3620) Optical design and fabrication : Lens system design

ToC Category:
Optical Design and Fabrication

Original Manuscript: June 6, 2006
Revised Manuscript: December 13, 2006
Manuscript Accepted: December 20, 2006
Published: December 22, 2006

Aleksandra Cvetkovic, Oliver Dross, Julio Chaves, Pablo Benitez, Juan C. Miñano, and Rubén Mohedano, "Etendue-preserving mixing and projection optics for high-luminance LEDs, applied to automotive headlamps," Opt. Express 14, 13014-13020 (2006)

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  1. J.-H. Park and J.-Y. Sah, "Design of reflector optics with smooth surface for automotive lamps," in SAE 2001 World Congress: Lighting Technology, SAE Technical Papers, 2001.
  2. V. I. Oliker and O. von Tempski, "On the design of reflectors with prespecified distribution of virtual sources and intensities," Inverse Probl. 14, 661-678 (1998). [CrossRef]
  3. H. Ries and J. A. Muschaweck, "Tailoring freeform lenses for illuminations," in Novel Optical Systems Design and Optimization IV, Proc. SPIE 4442, 43-50 (2001). [CrossRef]
  4. P. Benítez, R. Mohedano, and J. C. Miñano, "Design in 3D geometry with the simultaneous multiple surface design method of Nonimaging Optics," in Nonimaging Optics: Maximum Efficiency Light Transfer, Proc. SPIE 3781, 12-19 (1999). [CrossRef]
  5. P. Benítez, and J.C. Miñano,  et al, "Simultaneous multiple surface optical design method in three dimensions," Opt. Eng. 43,1489-1502 (2004). [CrossRef]
  6. O. Dross, P. Benitez, J. C. Miñano,  et al, "Review of SMS design methods and real world applications," in Nonimaging Optics and Efficient Illumination Systems,Proc. SPIE 5529, 35-47 (2004). [CrossRef]
  7. O. Dross, A. Cvetkovic, J. Chaves, P. Benitez, and J. C. Miñano, "LED headlight architecture that creates a high quality beam pattern independent of LED shortcomings," in Nonimaging Optics and Efficient Illumination Systems II, Proc. SPIE 5942, 126-135 (2005).
  8. J. C. Minano, P. Benitez, J. C. Gonzalez, W. Falicoff and H. J. Caulfield, "High Efficiency Non-Imaging Optics," US Patent 6,639,733 (28 Oct. 2003).
  9. P. Benitez and J. C. Minano, "Three-dimensional simultaneous multiple-surface method and free-form illumination-optics designed therefrom," US Patent: (pending).
  10. R. Winston, J. C. Miñano, and P. Benítez, Nonimaging Optics, (Elsevier Academic Press, San Diego, CA, 2005).
  11. For ECE specifications (i.e. Reg 112) see http://www.unece.org/trans/main/wp29/wp29regs.html
  12. J. Chaves, W. Falicoff, O. Dross, J. C. Miñano, P. Benítez, and W. A. Parkyn. "Combination of light sources and light distribution using manifold optics," in Nonimaging Optics and Efficient Illumination Systems III, Proc. SPIE 6338-21. 63380M-1 - 63380M-10 (2006).
  13. J. C. Chavez, W. Falicoff, J. C. Minano, P. Benítez, O. Dross, W. A. Parkyn, Jr, and R. Álvarez, "Optical manifold for light-emitting diodes," (International Patent pending).
  14. M. Weber, C. Stover, L. Gilbert, T. Nevitt, and A. Ouderkirk "Giant birefringent optics in multilayer polymer mirrors," Science 287, 2451-2455 (2000). [CrossRef] [PubMed]
  15. For reflector characteristics see www.3m.com
  16. O. Dross, J. C. Miñano, P. Benitez, A. Cvetkovic, and J. Chaves, "Non-imaging optics combine LEDs into one bright source," in SPIE Newsroom, http://newsroom.spie.org/x3596.xml (2006).

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